The last release of Mac OS doesn't have the option to create a bootable USB from Bootcamp like previous versions, and it is a problem because that require uses other tools.
I am updating this post today Dec 12, 2018. https://songentrancement.weebly.com/photomatix-pro-6-mac-download.html. The reason is that I was only using UNetbootin to create the bootable USB, I will leave guide as a second method since it still working, and I will explain to you how you can create the bootable Windows USB without extra software.
I started by preparing my usb 3.0 disk with diskapart command in windows terminal and fallow all the steps in TransMac with different mac os versions but the final result was always the same, when I plug the usb pen in my mac, I turn on pressing option key and I select usb but it always go to Mac OS X Utilities. Office for Mac 2011; Windows. Windows 10; Windows 8.1; Windows 7; Desktop App Converter. Download Windows 10 Disc Image (ISO File). USB or external drive for the download. A blank USB flash drive with at least 5 GB of space or blank DVD (and DVD burner) if you want to create media. We recommend using a blank USB or blank DVD, because any.
The first step for both methods requires to format your USB device to NTFS, this is the default filesystem, alternative you can use ExFAT but the installation could fail.
Format USB to ExFAT (Under your own risk)
In order to boot from the USB, you need to format the USB to ExFAT, you can do it using Disk Utility (it comes with MacOS).
This step is the same for both methods. You need to show all the devices in Disk Utility' before to start the process.
Select your USB device in the list (not the partition), right click and then click on the Erase option:
In the next screen make sure you select these two options:
- Format: ExFAT
- Scheme: Master Boot Record
Click the
Erase
button.If for some reason it fails, probably is because MacOS still using the USB, just repeat the steps, but if you see a screen similar to above screen is because the operation is successful.
Format USB with the terminal
You also can format the USB from the terminal, but you have to take care to use the correct device because, if you use the wrong name you will lose everything.
With this command you can list the device on MacOS:
This is an example, my USB is the disk2:
This command is to format the USB, the last parameter is the the USB:
Copy Windows files to USB - Method 1
This process is very easy doesn't require to install other software, and they are just a few steps:
Open Windows ISO
Just double click on the ISO image, MacOS mount the image automatically.
Copy files
Now you only need to copy the files and paste them to the USB.
Command + A
Select all files.Command + C
Copy files.- Go to your USB
Command + V
paste the files.
This process could fail if you are using a USB with FAT32 because the file
install.win
is over 4GB, if this is the case try to open the terminal and copy paste the files from there (no always works. Try to follow the instructions to format the USB in ExFAT, NTFS works for some BIOS).This is the command to copy the files from the ISO to the USB:
And that is all, now you can try boot from the USB.
UNetbootin - Method 2
I will show you how you can use UNetbootin to create a bootable USB, it can be used no only for Mac but for Windows and Linux distributions too.
UNetbootin is free software and it is also available for Windows and Linux.
Check the path name of your USB Disk.
Always in Disk Utility, select the new partition that we created in the previous step, and click on the information button, it will give you the information about the new partition.
You also can use the terminal and the command
diskutil
to see the list of drives:Download UNetbootin:
- Download the
dmg
directly from the Website.
And copy theapp
to the/Application
folder. - I prefer to use homebrew to install applications, you can check this article for more information: Installing Applications on Mac with Homebrew:
Makes the USB booteable
Open UNetbootin and you only need select 3 options: Docuprint p255dw driver download mac.
- Diskimage and ISO
- Now we need open the ISO Windows image that is on our computer.
- Select your USB device on UNetbootin.
- Click on the OK, button and wait to the process end it will take a time.
- I tested other tools like
dd
andEtcher
but they are not working because Windows requires extra steps, for the moment this is the only easy tool that I know that works if you are on Windows try Rufus. - Some users reported that UNetbootin is not working, if after to format the USB drive and change the block size is not working for you try another Drive with enough space.
How can I make a bootable Windows installation USB on Mac OS X? After upgrading to macOS Mojave, you may find that Boot Camp Assistant is no longer supported and thus creating a bootable USB turns out to be a little bit challenging. In this tutorial we’ll show you how to create Windows 10 bootable USB from ISO on Mac, by using the Terminal or third-party software like UNetbottin.
Method 1: Create Windows 10 Bootable USB on Mac Using UNetbottin
UNetbootin is a free, open source utility that allows you to create bootable USB drives on Windows, Linux, and Mac OS X. If you’ve downloaded Windows 10 ISO image, here is how you can create a bootable Windows installer USB on Mac using UNetbootin.
- Plug a USB drive into your Mac and open Disk Utility. Select your USB drive from the left panel and click on Info button. Note down the device name since we will need that later.
- Next, download and launch the UNetbottin utility. Select the “Diskimage” radio button, click “…” to select a bootable ISO image.
- After locating your Windows 10 ISO file, click on Open.
- Choose Type as USB Drive and select the device name of your USB drive (you probably would’ve noted it down earlier, so refer to that). Click OK to start installing to the USB drive.
- This process takes several minutes or longer, depending on the size of your selected ISO image.
Method 2: Create Windows 10 Bootable USB on Mac Using Terminal
Of course, if you prefer not to use third-party software, you can still use the excellent Terminal app, which is a little bit more involved, but no additional software needs to be installed. Follow these steps:
- After connecting a USB drive to your Mac, open a Terminal window and type diskutil list to display all the disks attached to your machine. You have to figure out the disk identifier of the USB drive you need to format. In my example, my USB drive is mounted as “disk2” and it’s about 32GB.
- Next, run the following command to format your USB drive and name it “WIN10“, where # is a placeholder for the disk identifier of your USB drive.
diskutil eraseDisk MS-DOS 'WIN10' GPT disk#
- Now, mount your Windows 10 ISO image with the command below, assuming it’s saved the Downloads folder. In my case, it is mounted as a volume named “ESD-ISO“.
hdiutil mount ~/Downloads/your_windows_10_image.iso
- Finally, run the following command to copy all the files from the mounted ISO to your USB drive.
cp -rp /Volumes/ESD-ISO/* /Volumes/WIN10/
This command will take a while, and once it finishes, you can disconnect the mounted ISO with this command:hdiutil unmount /Volumes/ESD-ISO
- Now you should be able to boot from the USB to install Windows 10 on your Mac or Windows machine.
Conclusion
These should be the easiest ways to create a Windows 10 bootable USB from ISO on Mac, without using Boot Camp Assistant. No matter which method you prefer, be sure that you backup any important data on your USB drive, as the procedure of creating bootable USB will delete everything on it.